refactor(forms): update placeholders for improved clarity and user guidance

- Made the placeholder in InputGroup optional for better flexibility.
- Updated various form components (CreateCompany, CreateCustomer, CreateNotification, CreateCompanyCategory) to provide more descriptive placeholders, enhancing user understanding of expected input.
- Ensured consistency in placeholder text across different fields to improve overall user experience.

src/components/FormElements/InputGroup/text-area.tsx

@@ -11,7 +11,7 @@ import {
 type PropsType<T extends FieldValues> = {
   name: Path<T>;
   label: string;
-  placeholder: string;
+  placeholder?: string;
   required?: boolean;
   disabled?: boolean;
   active?: boolean;